[coreboot] Re: First time using coreboot+edk2, I didn't get to see the beginning.

[|H|]

Hi Kevin,

You mentioned you've been hacking with SeaBIOS for a while. You may have already seen building as a CSM mentioned here: https://seabios.org/Build_overview

This seems to suggest the process as building SeaBIOS as a CSM module and then building EDKII. I think I tried to do this once and EDKII ended up being too big to fit in the CBFS I had.

There was also a talk on getting SeaBIOS working as a CSM on hardware at OSFC one year:
https://cfp.osfc.io/osfc2020/talk/YWWRVG/

I'd be interested to see how to solve this, and I'm sorry I can't be of much help.

-------- Original Message --------
On 14 Sept 2023, 14:37, Keith Hui wrote:
> On Thu., Sep. 14, 2023, 09:18 Matt DeVillier,  wrote:
> > On Wed, Sep 13, 2023 at 11:28 PM Keith Hui  wrote:
> > > I did add SeaBIOS as
> > > secondary payload, and it couldn't boot. Then I pulled out the main
> > > drive out of my laptop which is all UEFI, and it booted fine after
> > > probably 30 seconds of nothing - the first thing I saw on screen is
> > > the Fedora spinner. Nothing from edk2 or grub on the drive.
> >
> > edk2 doesn't support secondary payloads
>
> Then how should edk2 + CSM (seabios?) + (i)PXE be set up so it can boot from anything?
> > > There also was a bit of delay on my connected serial console, then
> > > when info finally started flowing, it's already well into ramstage.
> > > And when I checked cbmem, it unfortunately overflowed so I lost logs
> > > of raminit, which would be most important given my patch train now
> > > under review. It would take a warm reboot before I start getting the
> > > head of the boot logs.
> > >
> > > I didn't set a boot logo.
> > >
> > > What more set up I have to do to get my edk2 and grub boot menu back?
> > >
> > > I've attached logs from minicom, cbmem, and my Kconfig, if it helps.
> >
> > as Nico said, you need to use a linear framebuffer, not vga text. The display resolution should be native.
> >
> > also, edk2 cbmem logging may or may not work, and may or may not slow down boot time.
>
> I'll report back when I return from a trip in a week.
>
> edk2 cbmem logging probably works. I remember seeing some EFI things in there.
>
> Thanks
> Keith